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Synergy effect in photodegradation of contaminants from water using ordered mesoporous carbon-based titania catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
45193 46405 2014 11 PDF Available
Title
Synergy effect in photodegradation of contaminants from water using ordered mesoporous carbon-based titania catalyst
Abstract

•The composite catalysts show a synergy effect by carbon and anatase on elimination of dye from water.•The carbon doping into the anatase lattice enhances the photocatalytic performance.•The adsorption–catalysis pave a good way for the treatment of organic contaminants with relatively high concentration.•The heterogeneous supported catalysts are highly stable in the successive adsorption–photocatalysis cycles.

A synergy effect by carbon and anatase in the mesoporous C–TiO2 nanocomposites is reported here on the degradation of dye in contaminated water. The as-formed mesoporous C–TiO2 composites have ordered 2D hexagonal mesostructure, high surface area (384 m2/g), uniform and large mesopores (4.5 nm), large pore volume (0.31 cm3/g), titania nanoparticles confined inside carbon frameworks, tunable TiO2 contents (40–87 wt%), and dopant of element carbon into anatase lattice. The large mesopore space of carbon offers high capacity for the adsorption of dyes from water. Well-dispersed and carbon-doped anatase TiO2 nanoparticles are active for photocatalysis especially in visible light region. Once the dyes are involved inside mesopores by adsorption, they are easily accessible to anatase particles through the common interface between the two, and immediately fully oxidized. The immobilization of anatase particles in the carbon framework greatly improves the stability during its usage. The mesoporous C–TiO2 nanocomposite catalysts can be reused more than 20 times without obvious loss both in anatase content and processing ability of contaminated water.

Graphical abstractA synergy effect by carbon and anatase in the mesoporous C–TiO2 nanocomposites was explored for adsorbing and photo-degrading dyes owing to the excellent mesostructures and high visible-light induced photocatalytic activity of carbon doped TiO2.Figure optionsDownload full-size imageDownload as PowerPoint slide

Keywords
Adsorption–photocatalysis; Synergy; Carbon; Titania; Mesoporous
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Synergy effect in photodegradation of contaminants from water using ordered mesoporous carbon-based titania catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 146, March 2014, Pages 151–161
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
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